Thomas Muller, Manuel Neuer and Lothar Matthaus discuss Germany 'euphoria' under new coach Hansi Flick
Flick takes charge of his first national squad as Germany prepare for their upcoming World Cup qualifiers against Lichtenstein, Armenia and Iceland.
Neuer, 35, needed treatment on his right ankle during Tuesday's 3-1 win at Dortmund in the German Super Cup.
After two successful seasons with RB Leipzig, Nagelsmann, who turns 34 later this month, has taken charge of Bayern, replacing Hansi Flick, who is Germany's new head coach.
'Rainbow armband symbol for diversity': UEFA stops investigation into Manuel Neuer's Pride Month gesture
Neuer has been sporting the rainbow-coloured armband to show support towards the LGBT+ community during 'Pride Month'.
Bayern Munich suffered their first European defeat under Hansi Flick last week as PSG ran out 3-2 winners at Allianz Arena to take control of the tie.
Of the problems Loew has to fix, Neuer is not one and he had little to do in the second half as Germany pushed for an equaliser that never came.
Neuer, who joined Bayern from Schalke in 2011, is credited with redefining the role of goalkeeper, playing as a "sweeper-keeper" and operating partly as an outfield player to launch attacks.
Germany start their campaign against Mexico in Moscow having won just one of their six friendlies since qualifying for Russia 2018
Around 400 spectators and 200 media saw head coach Joachim Loew put the German squad through their paces in a series of short matches.
Ask any manager and he will tell you what a good man between the sticks brings to the team...
Goalkeeper Manuel Neuer - who hadn't played a competitive game since September until the friendly loss to Austria on Saturday - was included in the squad for the tournament in Russia.
Germany now suffered back-to-back defeats after also sliding to a 1-0 loss to Brazil in Berlin in March.
The result is a big concern for Germany head coach Joachim Loew with the World Cup to kick off in less than a fortnight.
Neuer has not played since fracturing a metatarsal in his left foot last September -- the second time he suffered the same injury in 2017.
Germany host Spain on Friday in Duesseldorf and Brazil in Berlin next Tuesday in high-profile friendlies, but will again be without their captain and goalkeeper.